A conducting disc of radius `R` is placed in a uniform and constant magnetic field `B` parallel to the axis of the disc.With what angular speed should the disc be rotated about its axis such that no electric field develops in the disc (the electric charge and mass are `e` and `m`)

Find the electric field on the axis of a charged disc.

A brass disc is rotating about its axis. If temperature of disc is increased then its

A conducting disc of radius r rotaes with a small but constant angular velocity omega about its axis. A uniform magnetic field B exists parallel to the axis of rotation. Find the motional emf between the centre and the periphery of the disc.

A conducting disc of radius r rotaes with a small but constant angular velocity omega about its axis. A uniform magnetic field B exists parallel to the axis of rotation. Find the motional emf between the centre and the periphery of the disc.

A conducting disc of radius r rotaes with a small but constant angular velocity omega about its axis. A uniform magnetic field B exists parallel to the axis of rotation. Find the motional emf between the centre and the periphery of the disc.

A non-conducting thin disc of radius R charged uniformly over one side with surface density sigma , rotates about its axis with an angular velocity omega . Find (a) the magnetic field induction at the centre of the disc (b) the magnetic moment of the disc.

A circular disc of radius 0.2 m is placed in a uniform magnetic field of induction (1)/(pi)Wb//m^(2) in such a way that its axis makes an angle 60^(@) with the field. The magnetic flux linked with the disc is

A non-conducting thin disc of radius R and mass m having charge uniformly over one side with surface density sigma rotates about its axis with an angular velocity omega . Find : (a) the magnetic induction at the centre of the disc, (b) the magnetic moment of the disc. ( c) the ratio of magnetic moment and angular momentum of disc.